Improvement in adjusting pressure-feet of molding-machines



J. S. LO OMIS.

ADJUSTING PRESSURE-FEET 0F MOLDING-MACHINES. N0.171,Z9 6. PatentedDec.21, 1875.

N. PETERS. FNOTO-LITHOGRAFHER, WASNMGTON, Dv C.

PATENT OEEIoE.

JOHN 'S. LOOMIS, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN ADJUSTING PRESSURE-FEET OF MOLDING-MACHINES.

Specification forming part of Letters Patent No. 171,296, dated December21, 1875; application filed November 2, 1875. i

To all. whom it may concern:

Be it known that I, J OHN S. LooMIs, of the city of Brooklyn, in thecounty of Kings and State of New York, have invented a certain novel anduseful Improvement in Adjusting Pressure-Feet of Molding-Machines; and Ihereby declare in what manner the same is to be constructed, arranged,and operated, reference being had to the accompanying drawings, whichare lettered to correspond with and form a part of the specification.

To enable those skilled in the mechanic arts to onstruct and operate thesame, I will desci e it as follows, to wit:

Btitore describing the individual parts of my invention, I will herestate that its object is to produce ELIIIOIG uniform pressure upon thedifl'erent surfaces or planes of the strip to be dressed for moldings orfor other purposes while passing through the machine, and when itbecomes necessary, as in a planing-machine, two independentpressure-feet, arranged one at the back of the revolving cutter-head,and the other, as shown in the drawings, immediately infront of thecutter P, may be employed, both arranged and operating substantially asset forth in the following words:

Figure l is a side elevation of a moldingmachine.

A is the supporting frame-work or table, upon which the bed 0 rests. B Bare curved arms, provided with curved slits, in which the bolts X X areoperated to adjust the slitted head H and pressure-foot F nearer to orfarther from therevolvingcutterl upon either a thin or thick molding, orupon a strip, m, of different thicknesses. O O are supportingbracessecured to and at the rear of the headblock H, for the purpose ofthrowing the pressure-foot F from the cutter while adjusting it to thediiferent thicknesses of the strip m, provided with a vertical curvedslit, in which the pin X operates, when the pressure-foot F ismolding-machine A.

The molding is shown upon the table or bed 0 at m. P is the cutter orplane. F is the pressure-foot, provided with the slitted shank R, andsecured to the head H, to be operated at different angles, by means ofthe bolt and nut N in the long straight slit in the said'head, incombination with the slitted braces (l O. S S are standards to supportthe cutter-head. T T are toggle-joints of the curved arms B B. W W areweights to produce the pressure through the foot F upon the molding m.

The novelty of thisiuvention consists in the mode of operating a singlepressure-foot at different angles, to suit the diflerent thicknesses Vand surfaces of the moldings or strips m, in close proximity to thecutters, without being in danger of coming in contact with the same. Itfurther consists in carrying the pressurefoot F from, instead ofagainst, the cutter, to operate upon a thick or thin material, by meansof the slotted lug O, placed behind the pressure-foot F.

What I claim as novel and useful, and wish to protect by Letters Patentof the United States, is-

The pressure-foot F, with slotted shank R, operating at different anglesupon the screwpin X, in combination with the slotted transverse head Hand arms B, with the supporting-braces (3, all arranged and operating inthe manner and for the purpose set forth.

In testimony whereof I hereunto subscribe my name in the presence of twowitnesses.

JOHN S. LOOMIS. Witnesses:

JAMES P. MOLEAN,

ROBERT A. MORRISON.

